Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bfe425fa676c17d…

MALICIOUS

PDF

69.8 KB Created: 2021-02-27 23:25:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c8a942af609401ad86e05471d5724b8e SHA-1: d6825f0b21aaa58f506b007e4b4760583571f510 SHA-256: 7bfe425fa676c17d0759636887f83463cc091403faf9925f52762539b14603cc
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jumiwimov.ru/award?keyword=a+christmas+carol+radio+play+pdf PDF link annotation
    • https://xitirume.weebly.com/uploads/1/3/4/3/134392652/17df5d7bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414336/normal_5fee710e5bac4.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/2000_ford_ranger_replacement_rocker_panels.pdfIn PDF document text
    • https://gitasojozatoj.weebly.com/uploads/1/3/0/9/130968906/livesilixab.pdfIn PDF document text
    • http://ganitigusawev.mygamesonline.org/gigolewiwuvakivox.pdfIn PDF document text
    • https://rodubimalutavos.weebly.com/uploads/1/3/2/6/132695690/34e7ca414bb.pdfIn PDF document text
    • https://jedurabononip.weebly.com/uploads/1/3/1/4/131453193/1d5261.pdfIn PDF document text
    • https://fafemuwupid.weebly.com/uploads/1/3/4/3/134368635/gulavibuvonawatuxa.pdfIn PDF document text
    • https://lezanaxowap.weebly.com/uploads/1/3/2/6/132696506/3168156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425230/normal_5fcc6df257698.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/dizawesimifuwukom.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/fotatilu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408186/normal_5fe0c82e8b066.pdfIn PDF document text
    • https://cdn.sqhk.co/paxabuxutujo/gdqP08z/mujone.pdfIn PDF document text
    • https://cdn.sqhk.co/deloreba/rjcAL0H/71058836545.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD442 5484 bytes
SHA-256: f1de8b4c5d422a1b293e0cf475737db338bbf333e268589fa4be14770a040115
font_01_sfnt_off0000e6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C7 10448 bytes
SHA-256: 99250a516ae13dca0cee71c1f85c2d40c09d1af2f759bab40dd05db02a4dbdf3